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A21-02 十勝岳の爆発的噴火の特性 : 1989 年 1 月 20 日の噴火その 2
Characteristics of Explosive Eruption at Tokachi Volcano : Eruption in 20,January, 1989 part2
1990
Programme and Abstracts the Volocanological Society of Japan
Characteristics of Explosive Eruption at Tokachi Volcano : Eruption in 20,January, 1989 part2